Open Access, Peer-reviewed
eISSN 2234-7666
    J Korean Acad Conserv Dent. 2005 May;30(3):170-177. Korean.
    Published online May 31, 2005.
    https://doi.org/10.5395/JKACD.2005.30.3.170
    Copyright © 2005 Korean Academy of Conservative Dentistry
    Original Article

    Influence of the shade guide design on color matching

    Geol Park,1 Dong-Jun Kim,1 Shee-Eun Lee,2 Yun-Chan Hwang,1 Won-Mann Oh,1 and In-Nam Hwang1
      • 1Department of Conservative Dentistry, College of Dentistry, DSRI, Chonnam National University, Korea.
      • 2Department of Pharmacology and Dental Therapeutics, College of Dentistry, DSRI, Chonnam National University, Korea.
    • Corresponding author: In-Nam Hwang. Department of Conservative Dentistry, College of Dentistry, Chonnam National University, 8 Hak-dong, Dong-gu, Gwangju, Korea, 501-757. Tel: 82-62-220-4443, Fax: 82-62-225-8387, Email: hinso@jnu.ac.kr
    Received September 06, 2004; Revised October 27, 2004; Accepted November 09, 2004.

    This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

    Abstract

    This study was conducted in order to assess whether the form of the shade guide affects in deciding the color of the teeth using the shade guide.

    Eight shade light cured composite resins (Esthet-X, Dentsply, Milford, USA) were used in this study. Shade guides including the model of maxillary central incisors, teeth-form shade guide, doughnut form shade guide, and shade guide with perforated gray shield were prepared with eight shade composite resins and provided the codes randomly.

    After arranging the models of teeth, 19 dentists working at the clinic of the Dentistry of Chonnam University Hospital and 65 students of college of dentistry, Chonnnam University selected the shade guides corresponding to the color of each tooth on the gray board under the D65 standard illuminant.

    B1 shade showed highest accuracy of about 95% among all shade guides of 3 forms applied to the test and regardless of observer, tooth form shade guide showed the highest accuracy (p < 0.05), and the doughnut form showed the lowest accuracy (p < 0.05).

    At the time of deciding on the color of the teeth using the shade guides as a result of above, the forms of the shade guides can affect the accuracy, and it suggests that the development of the diversified forms of shade guides, which may obtain more accurate results, is required.

    Keywords
    Shape of Shade guide; Color matching

    Figures

    Figure 1
    Schematic drawing of shade guides.

    Figure 2
    Tooth model and prepared shade guides.

    Figure 3
    Percent correct matches by observer and by shape of shade guide.

    Tables

    Table 1
    Color difference (ΔE*) among different shade of used composites

    Table 2
    Percent correct matches by observer and by shape of shade guide

    Table 3
    Statistical analysis by two-way ANOVA

    Table 4
    Tooth shape shade guide matching selections of all observers

    Table 5
    Doughnut shape shade guide matching selections of all observers

    Table 6
    Perforated shield shade guide matching selections of all observers

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    MeSH Terms
    Composite Resins
    Dentistry
    Dentists
    Humans
    Incisor
    Jeollanam-do
    Tooth
    Metrics
    Share
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    Tables
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